The former Pussycat Doll couldn't contain her emotions as she watched her man race to victory in the Abu Dhabi Grand Prix on Sunday (23 November).
Nicole was pictured cheering on Lewis from the Mercedes team garage when he crossed the line, and later joining his throng of colleagues and supporters as they congratulated him on his win.
The singer managed to steal a kiss amid all the excitement.
Nicole posted a picture to Instagram showing her kissing Lewis' helmet alongside the caption: "@lewishamilton Congratulations babe for winning the #2014F1WorldChamionship !!! I'm soooo proud of you!!! #GodisGood #abudhabiGP."
She later added: "Ahhh! My man Lewis Hamilton! 2014 World Champion! #soblessed."
Lewis - who finished 67 points clear at the top of the table - is only the fourth British driver to win two world titles. He previously won in 2008.
After the race, he said: "This is the greatest day of my life. 2008 was a great year in my life. The feeling I have now is way, way past that. The greatest feeling ever."
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